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"svn update --depth=..." is, annoyingly, not a specification of the desired depth, but rather a _limit_ added on top of the "sticky" depth in the working-directory. However, if the directory doesn't exist yet, then it sets the sticky depth of the new directory entries. Unfortunately, the svn command-line has no way of expanding the depth of a directory from "empty" to "files", without also removing any already-expanded subdirectories. The way you're supposed to increase the depth of an existing directory is via --set-depth, but --set-depth=files will also remove any subdirs which were already requested. This change avoids getting into the state of ever needing to increase the depth of an existing directory from "empty" to "files" in the first place, by: 1. Use svn update --depth=files, not --depth=immediates. The latter has the effect of checking out the subdirectories and marking them as depth=empty. The former excludes sub-directories from the list of entries, which avoids the problem. 2. Explicitly populate missing parent directories. Using --parents seemed nice and easy, but it marks the parent dirs as depth=empty. Instead, check out parents explicitly if they're missing. llvm-svn: 347883
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